1/*-
2 * Copyright (c) 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 1993, 1994, 1995, 1996
5 *	Keith Bostic.  All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10/*
11 * Common messages (continuation or confirmation).
12 */
13typedef enum {
14	CMSG_CONF, CMSG_CONT, CMSG_CONT_EX,
15	CMSG_CONT_R, CMSG_CONT_S, CMSG_CONT_Q } cmsg_t;
16
17/*
18 * Message types.
19 *
20 * !!!
21 * In historical vi, O_VERBOSE didn't exist, and O_TERSE made the error
22 * messages shorter.  In this implementation, O_TERSE has no effect and
23 * O_VERBOSE results in informational displays about common errors, for
24 * naive users.
25 *
26 * M_NONE	Display to the user, no reformatting, no nothing.
27 *
28 * M_BERR	Error: M_ERR if O_VERBOSE, else bell.
29 * M_ERR	Error: Display in inverse video.
30 * M_INFO	 Info: Display in normal video.
31 * M_SYSERR	Error: M_ERR, using strerror(3) message.
32 * M_VINFO	 Info: M_INFO if O_VERBOSE, else ignore.
33 *
34 * The underlying message display routines only need to know about M_NONE,
35 * M_ERR and M_INFO -- all the other message types are converted into one
36 * of them by the message routines.
37 */
38typedef enum {
39	M_NONE = 1, M_BERR, M_ERR, M_INFO, M_SYSERR, M_VINFO } mtype_t;
40
41/*
42 * There are major problems with error messages being generated by routines
43 * preparing the screen to display error messages.  It's possible for the
44 * editor to generate messages before we have a screen in which to display
45 * them, or during the transition between ex (and vi startup) and a true vi.
46 * There's a queue in the global area to hold them.
47 *
48 * If SC_EX/SC_VI is set, that's the mode that the editor is in.  If the flag
49 * S_SCREEN_READY is set, that means that the screen is prepared to display
50 * messages.
51 */
52typedef struct _msgh MSGH;	/* MSGS list head structure. */
53SLIST_HEAD(_msgh, _msg);
54struct _msg {
55	SLIST_ENTRY(_msg) q;	/* Linked list of messages. */
56	mtype_t	 mtype;		/* Message type: M_NONE, M_ERR, M_INFO. */
57	char	*buf;		/* Message buffer. */
58	size_t	 len;		/* Message length. */
59};
60
61/* Flags to msgq_status(). */
62#define	MSTAT_SHOWLAST	0x01	/* Show the line number of the last line. */
63#define	MSTAT_TRUNCATE	0x02	/* Truncate the file name if it's too long. */
64